Trout cod
📖 Overview
Occur from riffle and boulder areas in relatively small upland streams to larger deeper rivers with sand and clay substrates and submerged timber and snags . Found in still and fast-flowing waters (14°-28°C), usually over bedrock, boulder and gravel bottoms of streams. Large fish confined to deep holes between falls and rapids, while small ones are found among boulders. Feed on insects, crayfish, shrimp, and small fishes; cannibalism occurs. Spawn in spring and early summer. The large, adhesive eggs are laid on hard surfaces. Hatching occurs in 5-10 days at 20°C. Sexual maturity is attained at 3-5 years of age . Territorial juveniles. Infected by parasitic protozoan Chilodonella cyprini; susceptible to `ich' & Saprolegnia infections. Protected by law and its capture is strictly prohibited. Known to hybridize with closely related Murray .
🔬 Taxonomy
🐟 Physical Description
Physical description for Trout cod is currently being compiled.
🌀 Behaviour
Behavioural data for Trout cod is currently being reviewed.
🦐 Diet
Trout cod are carnivores and feed on other fish, crustaceans (such as crayfish, yabbies and freshwater shrimp) as well as aquatic and terrestrial insects. Larvae are pelagic fish and eat zooplankton.
🥚 Reproduction
The demersal and adhesive eggs (2.5-3.6 mm in diameter) are laid onto a hard surface. Hatching starts 5 days after fertilization and continues for up to 10 days at around 20°C.
🌍 Habitat & Distribution
Freshwater; demersal; non-migratory. Temperate; 18°C - 28°C ; 32°S - 36°S South Wales, Australia - Mitta Mitta River, upper Murray River (Tintaldra, Mulwala area-Ref.
🌿 Ecology
insects, crayfish, shrimp, and small fishes; cannibalism occurs
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🎣 Angling Guide
- medium-heavy 7ft spinning rod
- 30-50 lb braid
- fluorocarbon leader
- grass flats
- oyster bars
- marsh drains
- deeper channel edges
Use barbless hooks, minimise air exposure, and revive fish head-first in current before release.
⚠️ Slot limits protect breeding-size fish. Verify daily bag limits.
📊 Population Dynamics
| Year | Region | Index | Notes |
|---|---|---|---|
| - | - | - |
🌐 Names & Taxonomy
| Language | Common Names |
|---|---|
| 🇬🇧English | Blue cod · Blue Nose · Blue Nose Cod · Bluenosed Cod · Rock Cod · trout cod · trout-cod |
| 🌍CES | paokoun znamenaný |
| 🇷🇺Russian | Маккулочелла |
| 🇨🇳Chinese | 突吻麥鱈鱸 |
Scientific Synonyms
| Scientific Name | Author | Year | Status |
|---|---|---|---|
| Gryptes brisbanii | Lesson | 1825 | Synonym |
| Grystes brisbani | Lesson | 1831 | Synonym |
| Grystes macquariensis | Cuvier | 1829 | Synonym |
| Oligorus gibbiceps | Macleay | 1885 | Synonym |
| Oligorus mitchellii | Castelnau | 1873 | Synonym |
🔍 Similar Species
🗺️ Global Occurrence Map
Occurrence records from the Global Biodiversity Information Facility (GBIF) - 6 records indexed .
👥 Community & Contribute
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